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zoom RSS コーヒーが前立腺ガンのリスクを減らす?

<<   作成日時 : 2009/12/10 00:16   >>

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 コーヒーが進行性の前立腺ガンのリスクを減らす可能性があるとのハーバード大の研究が米国がん研究学会カンファランスで発表された。コーヒーの愛飲者が飲まない人より浸潤性の腫瘍のリスクが60%低かったという。コーヒーは前立腺がんと関連する糖を分解し性ホルモンを低下させる。
 前立腺ガンはライフスタイルの因子とほとんど関係がないとされている。しかし、研究者はコーヒーのどの成分がプラス効果を持っているのかを証明していない。
 コーヒーは、鉱物や抗酸化剤など多くの生物学的活性化合物を含んでいて、組織障害を防止しているという。
 しかし、多くの他の研究ではコーヒーは前立腺ガンのリスクと関連がないとしている。
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Page last updated at 00:01 GMT, Tuesday, 8 December 2009
Coffee could help cut prostate cancer risk, says study
http://news.bbc.co.uk/2/hi/health/8395865.stm

画像Coffee
Some of coffee's components can have beneficial effects

Drinking coffee could help to cut the risk of advanced prostate cancer, a US study suggests.

It found the heaviest consumers had a 60% lower risk of aggressive tumours than men who did not drink any coffee.

Coffee has an effect on the way the body breaks down sugar and also on sex hormone levels - both of which have been linked to prostate cancer.

The Harvard Medical School study was presented to an American Association for Cancer Research conference.


We would not recommend that men cultivate a heavy coffee drinking habit on the back of this research
Helen Rippon
The Prostate Cancer Charity

Researcher Dr Kathryn Wilson said: "Very few lifestyle factors have been consistently associated with prostate cancer risk, especially with risk of aggressive disease, so it would be very exciting if this association is confirmed in other studies."

The researchers are unsure which components of coffee might have a positive effect.

However, it is known to contain many biologically active compounds, such as minerals and antioxidants, which limit damage to the tissues caused by the release of energy in cells.

The researchers documented the coffee intake of nearly 50,000 men every four years from 1986 to 2006.

They stress that more work is needed before any firm conclusion can be drawn about the beneficial effects of coffee.

But, at the very least, Dr Wilson said: "Our results do suggest there is no reason to stop drinking coffee out of any concern about prostate cancer."

Mixed results

Helen Rippon, of The Prostate Cancer Charity, said previous research on the effect of caffeinated drinks on prostate cancer had produced mixed results.

She said the latest study suggested drinking coffee might have a beneficial effect but more work was needed to draw firm conclusions.

She said: "We would not recommend that men cultivate a heavy coffee drinking habit on the back of this research, not least because a high caffeine intake can cause other health problems.

"However, men who already enjoy a regular cup of coffee should be reassured that they do not need to give this up for the sake of their prostate."

Jessica Harris, of the charity Cancer Research UK, said: "A number of other studies looking at coffee and prostate cancer have found that drinking coffee does not affect the risk of prostate cancer."

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